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Diseases

Evoked Resonant Neural Activity Reveals Promising Biomarker for Optimizing Deep Brain Stimulation in Parkinson's Disease

Strategic Insights

— 1 min read

Researchers at Katholieke Universiteit Leuven have made a groundbreaking discovery in the field of neurodegenerative diseases, specifically Parkinson's Disease. The study evaluates the utility of evoked resonant neural activity (ERNA) as a physiologically grounded biomarker for optimizing deep brain stimulation (DBS) therapy. The researchers aimed to characterize ERNA's sensitivity to stimulation parameters and directional contact location, and to identify its spatial distribution using directional leads.

Key Takeaways:

  • The study recorded ERNA intraoperatively from 14 patients with Parkinson's Disease who underwent awake STN-DBS implantation with directional leads.
  • ERNA features were analyzed across stimulation amplitudes and contacts, revealing that ERNA magnitude scaled with stimulation intensity and varied across directional contacts.
  • A sweet spot was derived based on the anatomical location of stimulation settings associated with high ERNA magnitudes, which localized high-amplitude ERNA responses to a focal dorsal STN cluster at the motor-associative border.
  • The ERNA-defined sweet spot closely aligned with four independent clinical targets, supporting the use of ERNA as an objective biomarker to guide DBS programming.
  • The study highlights the potential of ERNA to improve the efficacy of DBS therapy in Parkinson's Disease patients.

Statistics:

  • 14 patients with Parkinson's Disease underwent awake STN-DBS implantation with directional leads.
  • ERNA magnitude scaled with stimulation intensity, increasing by 2.5-fold when stimulation intensity was increased from 1.5 to 3.0 volts.
  • The ERNA-defined sweet spot localized high-amplitude ERNA responses to a focal dorsal STN cluster at the motor-associative border, with a centroid distance of 1.41-2.08 mm from four independent clinical targets.

Sources:

  • NewsRx. Researchers at Katholieke Universiteit Leuven Report Findings in Parkinson's Disease (Evoked Resonant Neural Activity Reveals an Electrophysiologic Sweet Spot for Directional Subthalamic Nucleus Deep Brain Stimulation in Parkinson's Disease). Health & Medicine Week. October 31, 2025; p 6041.
  • Evoked Resonant Neural Activity Reveals an Electrophysiologic Sweet Spot for Directional Subthalamic Nucleus Deep Brain Stimulation in Parkinson's Disease. Neuromodulation, 2025.

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